class_docstr: Helper to grab a series of screenshots from the current Canvas-like object.
code: def _is_qt_widget(self):
      try:
          from PyQt5.QtWidgets import QWidget
      except ImportError:
          return False
      return isinstance(self._canvas, QWidget)
  
imports: from __future__ import annotations
  import os
  import time
  import shutil
  from vispy.io import imsave
  from vispy.gloo.util import _screenshot
  from vispy.scene import SceneCanvas
  from sphinx_gallery.scrapers import optipng, figure_rst
label_desc: Use image node_id 5 for calling the FrameGrabber obj's underlying member method code with example usage: obj._is_qt_widget() and returns: isinstance, False